Unusual Cabin Noise When AC is On
The noise is likely caused by the HVAC system's blower motor, fan, or debris in the air intake. It may also be related to the compressor or refrigerant flow.
Diagnosis Details
Possible Causes
Debris (leaves, dirt) lodged in the cabin air intake or blower fan
Worn or misaligned blower motor bearings
Low refrigerant or compressor issue causing abnormal noise
Related OBD-II Codes
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What You Should Do
Check and clean the cabin air filter and intake area.
If noise persists, inspect blower motor and fan for debris or wear.
For compressor-related noises, have a professional check refrigerant levels and system operation.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
